Until now, TomTom has not yet been released, but it should be coming soon. However, we already have made an overview of the Navigation marke until now:

Rankings per country of turn-by-turn navigation apps (Navigation category)

It is striking to see that in the United States there is a lot of competition by Gokivo, MobileNavigator Europe and AT&T Navigator (while MobileNavigator doesn’t even support US maps), where in the rest of the world competition is almost absent. This will change soon however; we will keep you posted.